Quick Thermal Conductivity Tester QTM-700/QTM-710

Thermal conductivity: The amount of heat transferred per unit area of a material along the direction of heat flux at a unit temperature gradient per unit time. The unit is watts per meter Kelvin [W/(m · K)].
Local heating is carried out using a linear electrical conductor (hot wire) buried in the length direction of the sample, with the hot wire carrying a known constant power current, that is, the power remains constant in time and the length direction of the sample. The thermal conductivity can be calculated based on the power of the hot wire and the temperature at two known time intervals after heating. The temperature rise as a function of time is the thermal conductivity of the tested sample.

Standard method for rapid thermal conductivity tester QTM-700/QTM-710:

Suitable for various industrial materials, insulation materials, building materials, refractory materials, process materials, ceramic materials, food, etc.
GB/T 50538-2010 Technical Standard for Anti corrosion and Thermal Insulation Layer of Buried Steel Pipelines (Appendix C Method for Measuring Thermal Conductivity).
GB/T 5990-2006 Test Method for Thermal Conductivity of Refractory Materials (Hot Wire Method).
GB/T 11205-2009 Determination of Thermal Conductivity of Rubber - Hot Wire Method.
GB/T 10297-2015 Determination of thermal conductivity of non-metallic solid materials - Hot wire method.
SY/T 0415-1996 Technical Standard for Rigid Polyurethane Foam Anti corrosion and Thermal Insulation Layer of Buried Steel Pipeline (Appendix C: Rapid Thermal Conductivity Tester).

The main features of the rapid thermal conductivity tester QTM-700/QTM-710 are:

1. Adopting a 5.7-inch color touch screen, the display is intuitive and the operation is convenient.
2. Sensors that can connect three channels simultaneously make sample testing faster.
3. The security level and password protection settings effectively prevent accidental operations.
4. The measurement data can be transmitted through a USB flash drive and automatically converted to CSV format.
5. Standard reference plate for thermal conductivity is provided as standard to ensure the reliability of measurement values.
6. Short measurement time (60 seconds) and wide measurement range (0.03~12W/mK).
7. Automatically set heating current, real-time temperature rise curve, and can be measured repeatedly.
8. QTM-710 has the function of measuring thin film samples and comes standard with three sets of reference plates.

Quick Thermal Conductivity Tester QTM-700/QTM-710 Technical Parameters:

Measurement method: Hot wire method (hot wire method).
Measurement range: 0.03~12W/mk (watts per meter Kelvin).
Accuracy: The error value is within ± 5% (measured on the reference plate at room temperature).
Repeatability: The error value is within ± 3% (when measuring the reference plate).
Sensor: PD-11N box probe, heating wire, and chromium aluminum thermocouple.
Measurement time: 60 seconds.
Sample requirement: Approximately 100 (length) x 50 (width) x 20 (thickness) mm or more.
Display screen: 5.7-inch color touch screen.
Operation interface: Chinese/English/Japanese operation interface.
External output: 2 sets of RS-232C, 2 sets of USB.
Usage environment: Temperature: 5 ° C to 35 ° C, humidity: below 85% RH.
Power Supply: DC24V 5A，AC100～240V，50/60Hz。
Size: 262 (length) x276 (width) x158 (height) mm.
Weight: Approximately 4kg.

Options: PD-13N insulated moisture proof probe, PD-31N high-temperature hot wire probe, 12-01876 powder measuring container, IDP-100/DP-600 printer, polyethylene foam reference plate, silicone rubber reference plate, transparent quartz reference plate, zirconia reference plate, mullite reference plate, Hastelloy reference plate.